Which document must be documented on the state of California T-01?

Answer: B — Training hours

The T-01 form in California is specifically used for recording training hours for school bus drivers. This document is crucial because it helps ensure that drivers have received the necessary training and are compliant with state requirements. Tracking training hours on the T-01 form provides a clear record that can be referenced for compliance checks, audits, and to confirm that the driver meets the mandated training criteria before operating a school bus. In the context of the question, while medical certificates, vehicle inspection reports, and driver's logs are all important documents related to the operation and management of school buses, they do not pertain to the documentation specifically required on the T-01 form. The T-01 is focused solely on the training aspect, highlighting the importance of preparing drivers to safely transport students.